I'm gonna try and make amends anyways since your screen shot made me look like a total asshat.
Your comments were not completely over the line like the other player and it was evident they came from frustration. Although I have never told someone not to queue again, if I were paired eight times with a healer that was never healing me, I cannot say with any certainty that I would have handled it any better than you.

Your post sheds more light on the situation and the fact that you are giving the poster the benefit of doubt on being a troll and even offered a hand with advice leaves me with a favorable impression of you as a player.